Trampoline Frame Connecting Structure, Trampoline Frame and Trampoline

ABSTRACT

A trampoline frame connecting structure, a trampoline frame and a trampoline are provided. The trampoline frame connecting structure includes left and right frame traverse pipes, a mesh guard pipe, trampoline leg pipes and a connecting joint, wherein the connecting joint is a square pipe, positioning bulges are formed on left and right inner walls of the connecting joint, square nozzles are formed at ends of the left and right frame traverse pipes, an elongated positioning groove is formed on the left and right frame traverse pipes, and an interference fit is formed between the elongated positioning groove and the positioning bulges for a secondary positioning between the left and right frame traverse pipes and the connecting joint. A connection between the left and right frame traverse pipes and the connecting joint is stable and improves a positioning accuracy of a installed trampoline.

CROSS REFERENCE TO THE RELATED APPLICATIONS

This application is based upon and claims priority to Chinese PatentApplication No. 202121812287.X filed on Aug. 4, 2021, the entirecontents of which are incorporated herein by reference.

TECHNICAL FIELD

The present utility model relates to the field of trampolinestechnology, and in particular, to a trampoline frame connectingstructure, a trampoline frame and a trampoline.

BACKGROUND

The trampoline of the prior art mainly consists of a trampoline ringframe, trampoline legs, a mesh guard pipe, a connecting joint,trampoline cloth, a bed cloth connecting spring and the like, whereinthe trampoline ring frame is constituted by several frame traverse pipesassembled and connected, and the trampoline legs, the mesh guard pipeand the connecting joint are usually made of pipe fittings.

At present, the connection joints configured to assemble trampolineframes in the market generally adopt welding processing technology,which has the following shortcomings:

1) The welding process mostly adopts manual or robot welding operation,which is harmful to environment, safety and health, and after welding,and after welding, it is impossible to ensure that the welding positionof the parts are firm and not deformed and the structural dimensions arestable;

2) when the welding area of the connection joint is used outdoors, it isvery likely to rust, which leads to premature failure of the partstructure and scrapping;

3) during the process of batch production of the connecting jointsadopting welding technology, because of the complex production process,the manufacturing cycle of the products is prolonged and the productionefficiency is low;

4) after the connection joint is used for a long time, the ends of theframe traverse pipes and the joint connecting of the trampoline will bedeformed to cause torsional dislocation, which will lead to thetrampoline frame becoming loose gradually, which will affect theexperience or be unusable;

5) the connecting end of the connecting joint configured to install themesh guard pipe protrudes from the upper surface of the connectingjoint, which is easy to cause accidental scraping when the mesh guardpipe is removed and used, and the use is not safe enough.

SUMMARY

The present utility model is mainly intended to overcome the drawbacksof the prior art, and provide a trampoline frame connection structure,trampoline frame and trampoline with more stable connection, highinstallation and positioning accuracy, high trampoline frame strength,shortened product production cycle, prolonged trampoline service life,simple and convenient installation and safer use.

-   -   the following technical solutions used in the present utility        model:    -   a trampoline frame connecting structure, comprising left and        right frame traverse pipes, a mesh guard pipe, trampoline leg        pipes and a connecting joint, the connecting joint is a square        pipe, positioning bulges are formed on the left and right inner        walls of the connecting joint, square nozzles matched with inner        holes of the connecting joint are formed at the ends of the left        and right frame traverse pipes, an elongated positioning groove        is formed on outer walls of surfaces of the left and right frame        traverse pipes corresponding to the positioning bulges, the        positioning bulges can slide along the positioning groove in the        state that the left and right frame traverse pipes are matched        and inserted with the connecting joint, and an interference fit        is formed between the positioning groove and the positioning        bulges for secondary positioning between the left and right        frame traverse pipes and the connecting joint; the connecting        joint is also disposed with an installation structure for        connecting the trampoline leg pipe and the mesh protection pipe.

Further, the installation structure on the connecting joint forconnecting the trampoline leg pipe and the mesh guard pipe is a throughhole penetrating from up and down and provided on the connecting joint,wherein the trampoline leg pipe is inserted into the through hole frombelow the connecting joint, the mesh guard pipe is inserted into thethrough hole from above the connecting joint, the nozzles of the meshguard pipe and the trampoline leg pipe are sleeved inside and outside,and fastener installation holes penetrating from front to back arerespectively provided at corresponding positions of the connectingjoint, the trampoline leg pipe and the mesh guard pipe, so as to fixedlyconnect the trampoline leg pipe, the mesh guard pipe and the connectingjoint by matching fasteners.

Further, a clamping step for abutting against the bottom of theconnecting joint is formed at a lower end of the nozzle of thetrampoline leg pipe.

Further, the connecting joint is an integrally formed structure.

Further, a fastening sleeve is embedded between the nozzles oftrampoline leg pipes and mesh guard pipe and the through hole of theconnecting joint, and the fastening sleeve is configured to fill gapsbetween the trampoline leg pipes and mesh guard pipe and the throughhole, so that the connecting joint is firmly connected to the trampolineleg pipes and mesh guard pipe, and the fastening sleeve is provided witha fastener avoiding providing at a corresponding position of thefastener installation hole.

Further, the nozzle of the trampoline leg pipe is sleeved outside thenozzle of the mesh guard pipe.

Further, each of the positioning bulges positioning bulges is formed bythe inward recessing of the nozzle of the connecting joint, and each ofthe positioning bulges is circular in shape.

Further, the through hole penetrating from up and down of the connectingjoint is a circular-shaped hole, and the nozzles of the trampoline legpipe and the mesh guard pipe are formed with circular-shaped nozzlesmatched with the circular-shaped hole.

A trampoline frame, several frame traverse pipes, trampoline leg pipesand mesh guard pipes are connected through several connecting joints,thereby forming an annular trampoline frame, and the frame traversepipes, trampoline leg pipes, mesh guard pipes and the connecting jointsare connected by the above trampoline frame connecting structure.

A trampoline comprising the above trampoline frame and a trampolinecloth, wherein the trampoline cloth is connected to the trampoline framethrough several bed cloth connecting springs disposed at intervals alongthe periphery of the trampoline cloth.

According to the above description of the present utility model,compared with the prior art, the present utility model has the followingbeneficial effects:

first, the nozzle of the left and right frame traverse pipes and theconnecting joints are matched and inserted by square pipe to achieveone-time positioning; at the same time, the positioning grooves of theleft and right frame transverse pipes and the positioning bulges of theconnecting joints are relatively guided, slid and closely matched, sothat the secondary positioning between the left and right frametransverse pipes and the connecting joints can be achieved; theconnection between the left and right frame traverse pipes and theconnecting joint is more stable, which can improve the positioningaccuracy of the installed trampoline; after long-term use of thetrampoline, there is no torsion dislocation caused by large deformationof the connecting joint and the frame traverse pipe, and the trampolineframe has higher strength and longer service life.

Second, by providing through holes penetrating from up and down forinstalling the mesh guard pipe and trampoline leg tube on the connectingjoint, and providing fastener installation hole penetrating from frontto back at the corresponding positions of the connecting joint,trampoline leg tube and the mesh guard pipe, and the mesh guard pipe andthe trampoline leg tube are inserted into the through hole, and thenozzles of the mesh guard pipe and the trampoline leg pipe sleevedinside and outside, and the trampoline leg tube, the mesh guard pipe andthe connection joint can be fixedly connected with the fastener. Byadopting the connecting structure, the welding process is canceled, theproduction process can be simplified, the production cycle of productscan be shortened, the production efficiency can be improved, theproduction cost can be reduced, and the installation is simple andconvenient, and the appearance is simple and beautiful; at the sametime, it can avoid potential safety hazards caused by deformation ofwelding areas and parts scrapping caused by rusting of welding areas,and prolong the service life of trampoline.

Third, the connection joint integrates the frame traverse pipeconnection, the trampoline leg pipe support and fixation, and the meshguard pipe installation and fixation, which integrates multiplefunctions into one; the connecting joint is an integrally formedstructure, which can improve the manufacturing qualification rate andservice life.

Fourth, after the trampoline is assembled, there is no bulge at theconnection of the upper side of the mesh guard pipe when the mesh guardpipe is not installed for use, which can avoid accidental scratching bypersonnel and make it safer to use.

Fifth, the trampoline frame can be more stable by disposing a clampingstep at the lower end of the nozzle of the trampoline leg pipe forabutting against the bottom of the connecting joint; at the same time,the fastening sleeves are embedded between the nozzle of trampoline legpipe and mesh guard pipe and the through holes of the connecting joints,which are configured to make up for the possible gaps between the pipesafter assembly due to the uneven inner holes of the pipes, so that theconnecting joints can be firmly connected with trampoline leg pipe andmesh guard pipe, and the problem of bending failure at the suspendedparts of pipe bodies can be avoided.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a stereoscopic structural diagram of a trampoline frameaccording to embodiment 1 of the present utility model in asemi-assembled state;

FIG. 2 is an enlarged view at A in FIG. 1 , showing a stereoscopicstructural diagram of the trampoline frame connection structure in anassembled state;

FIG. 3 is an enlarged view at B in FIG. 1 , showing an explosive diagramof parts of the trampoline frame connection structure in an unassembledstate.

In the drawing: 1. Frame traverse pipe, 11. Square nozzle, 111.Positioning groove, 2.

Mesh guard pipe, 3. Trampoline leg pipe, 31. Clamping step, 4.Connecting joint, 41. Positioning bulge, 42. Circular-shaped throughhole, 5. Fastener installation hole, 6. Fastener, 61. Bolt, 62. Locknut, 7. Fastening sleeve, 71. Fastener avoiding providing.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present utility model will be further described by the specificembodiments below.

Embodiment 1

Referring to FIG. 1 to FIG. 3 , a trampoline frame connecting structureof the present utility model comprises left and right frame traversepipes 1, a mesh guard pipe 2, trampoline leg pipes 3 and a connectingjoint 4.

The connecting joint 4 is a square pipe, and circular-shaped positioningbulges 41 are formed on the left and right inner walls of the connectingjoint 4, and the positioning bulges 41 are formed by the inwardrecessing of the nozzle of the connecting joint 4. Square nozzles 11matched with inner holes of the connecting joint 4 are formed at theends of the left and right frame traverse pipes 1, an elongatedpositioning groove 111 is formed on outer walls of surfaces of the leftand right frame traverse pipes 1 corresponding to the positioning bulges41, the positioning bulges 41 can slide along the positioning groove 111in the state that the left and right frame traverse pipes 1 are matchedand inserted with the connecting joint 4, and an interference fit isformed between the positioning groove 111 and the positioning bulges 41for secondary positioning between the left and right frame traversepipes 1 and the connecting joint 4.

The connecting joint 4 is provided with a circular-shaped through hole42 penetrating from up and down for connecting the trampoline leg pipe 3and the guard pipe 2, and the nozzles of the trampoline leg pipe 3 andthe mesh guard pipe 2 are formed with circular-shaped nozzles matchedwith the circular-shaped through hole 42. Further, the trampoline legpipe 3 is inserted into the circular-shaped through hole 42 from belowthe connecting joint 4, and a clamping step 31 for abutting against thebottom of the connecting joint 4 is formed at the lower end of thenozzle of the trampoline leg pipe 3. The mesh guard pipe 2 is insertedinto the circular-shaped through hole 42 from above the connecting joint4, and the nozzles of the mesh guard pipe 2 and the trampoline leg pipe3 sleeved inside and outside, wherein the nozzle of the trampoline legpipe 3 is sleeved outside the nozzle of the mesh guard pipe 2. Fastenerinstallation holes 5 penetrating from front to back are respectivelyprovided at the corresponding positions of the connecting joint 4, thetrampoline leg pipe 3 and the mesh guard pipe 2, which are used forfixedly connecting the trampoline leg pipe 3, the mesh guard pipe 2 andthe connecting joint 4 with fasteners 6. A fastening sleeve 7 isembedded between the nozzles of trampoline leg pipes 3 and mesh guardpipe 2 and the circular-shaped through hole 42 of the connecting joint4, and the fastening sleeve 7 is configured to fill gaps between thetrampoline leg pipes 3 and mesh guard pipe 2 and the circular-shapedthrough hole 42, so that the connecting joint 4 is firmly connected tothe trampoline leg pipes 3 and mesh guard pipe 2, and the fasteningsleeve 7 is provided with a fastener avoiding providing 71 at acorresponding position of the fastener installation hole 5. Thefastening sleeve 7 adopts plastic material. The nozzle of trampoline legpipe 3 and mesh guard pipe 2 are made by adopting pipe shrinkingprocess. The connecting joint 4 is an integrally formed structure, whichis cut by laser and manufactured by one-step molding process.

A trampoline frame, several frame traverse pipes 1, trampoline leg pipes3 and mesh guard pipes 2 of the present utility model are connectedthrough several connecting joints 4, thereby forming an annulartrampoline frame, and the frame traverse pipes 1, trampoline leg pipes3, mesh guard pipes 2 and the connecting joints 4 are connected by theabove trampoline frame connecting structure.

A trampoline of the present utility model comprising the above, whereinthe trampoline cloth is connected to the trampoline frame throughseveral bed cloth connecting springs disposed at intervals along theperiphery of the trampoline cloth.

Referring to FIG. 1 to FIG. 3 , when the trampoline frame of the presentutility model is installed, the left and right frame traverse pipes 1are directly inserted on both sides of the connecting joint 4, and thepositioning bulges 41 are closely matched with the positioning grooves111. When it is necessary to install the mesh guard pipe 2, thetrampoline leg pipe 3 is inserted into the circular-shaped through hole42 from below the connector 4, and the mesh guard pipe 2 is insertedinto the circular-shaped through hole 42 from above the connecting joint4, and the nozzle of trampoline leg pipe 3 is sleeved outside the nozzleof the mesh guard pipe 2, so that the fastener installation hole 5 onthe connecting joint 4, trampoline leg pipe 3 and the mesh guard pipe 2are located on the same axis, and the trampoline leg pipe 3 and the meshguard pipe 2 are fixed relative to the connecting joint 4 by inserting abolt 61 into the fastener installation hole 5 and cooperating with alocking nut 62. After all the frame traverse pipes 1, trampoline legpipes 3, and mesh guard pipes 2 are installed according to the abovetrampoline frame connection structure through connection joints 4, acomplete trampoline frame is formed. When it is not necessary to use themesh guard pipe 2, the trampoline leg pipe 3 is inserted into thecircular through hole 42 from below the connecting joint 4, and thetrampoline leg pipe 3 is fixed relative to the connecting joint 4through the fastener 5.

Embodiment 2

A difference between this embodiment and embodiment 1 is that thefastening sleeve 7 in embodiment 1 is not disposed between the nozzlesof the trampoline leg pipe 3 and the mesh guard pipe 2 and thecircular-shaped through hole 42 of the connecting joint 4, and the innerwall of the circular-shaped through hole 42 is closely matched with theouter wall of the nozzle of the trampoline leg pipe 3.

The above are only two specific embodiments of the present utilitymodel, but the design concept of the present utility model is notlimited to this, and any immaterial modification of the present utilitymodel by using this concept should be an act violating the protectionscope of the present utility model.

1. A trampoline frame connecting structure, comprising left and rightframe traverse pipes, a mesh guard pipe, trampoline leg pipes and aconnecting joint, wherein the connecting joint is a square pipe,positioning bulges are formed on left and right inner walls of theconnecting joint, square nozzles matched with inner holes of theconnecting joint are formed at ends of the left and right frame traversepipes, an elongated positioning groove is formed on outer walls ofsurfaces of the left and right frame traverse pipes corresponding to thepositioning bulges, the positioning bulges slide along the elongatedpositioning groove when the left and right frame traverse pipes arematched and inserted with the connecting joint, wherein an interferencefit is formed between the elongated positioning groove and thepositioning bulges for a secondary positioning between the left andright frame traverse pipes and the connecting joint; the connectingjoint is also disposed with an installation structure for connecting atrampoline leg pipe and the mesh guard pipe.
 2. The trampoline frameconnecting structure according to claim 1, wherein the installationstructure on the connecting joint for connecting the trampoline leg pipeand the mesh guard pipe is a through hole penetrating from up and downand provided on the connecting joint, the trampoline leg pipe isinserted into the through hole from below the connecting joint, the meshguard pipe is inserted into the through hole from above the connectingjoint, nozzles of the mesh guard pipe and the trampoline leg pipe aresleeved inside and outside, and fastener installation holes penetratingfrom front to back are respectively provided at corresponding positionsof the connecting joint, the trampoline leg pipe and the mesh guard pipeto fixedly connect the trampoline leg pipe, the mesh guard pipe and theconnecting joint by matching fasteners.
 3. The trampoline frameconnecting structure according to claim 2, wherein a clamping step forabutting against a bottom of the connecting joint is formed at a lowerend of the nozzle of the trampoline leg pipe.
 4. The trampoline frameconnecting structure according to claim 1, wherein the connecting jointis an integrally formed structure.
 5. The trampoline frame connectingstructure according to claim 2, wherein a fastening sleeve is embeddedbetween the nozzles of trampoline leg pipes and mesh guard pipe and thethrough hole of the connecting joint, and the fastening sleeve isconfigured to fill gaps between the trampoline leg pipes and mesh guardpipe and the through hole, wherein the connecting joint is firmlyconnected to the trampoline leg pipes and mesh guard pipe, and thefastening sleeve is provided with a fastener avoiding providing at acorresponding position of a fastener installation hole.
 6. Thetrampoline frame connecting structure according to claim 2, wherein thenozzle of the trampoline leg pipe is sleeved outside the nozzle of themesh guard pipe.
 7. The trampoline frame connecting structure accordingto claim 1, wherein each of the positioning bulges is formed by aninward recessing of a nozzle of the connecting joint, and the each ofthe positioning bulges is circular in shape.
 8. The trampoline frameconnecting structure according to claim 2, wherein the through holepenetrating from up and down of the connecting joint is acircular-shaped hole, and the nozzles of the trampoline leg pipe and themesh guard pipe are formed with circular-shaped nozzles matched with thecircular-shaped hole.
 9. A trampoline frame, wherein a plurality offrame traverse pipes, trampoline leg pipes and mesh guard pipes areconnected through a plurality of connecting joints to form an annulartrampoline frame, and the plurality of frame traverse pipes, trampolineleg pipes, mesh guard pipes and the plurality of connecting joints areconnected by the trampoline frame connecting structure according toclaim
 1. 10. A trampoline comprising the trampoline frame according toclaim 9 and a trampoline cloth, wherein the trampoline cloth isconnected to the trampoline frame through a plurality of bed clothconnecting springs disposed at intervals along a periphery of thetrampoline cloth.
 11. The trampoline frame connecting structureaccording to claim 2, wherein the connecting joint is an integrallyformed structure.
 12. The trampoline frame according to claim 9, whereinthe installation structure on the connecting joint for connecting thetrampoline leg pipe and the mesh guard pipe is a through holepenetrating from up and down and provided on the connecting joint, thetrampoline leg pipe is inserted into the through hole from below theconnecting joint, the mesh guard pipe is inserted into the through holefrom above the connecting joint, nozzles of the mesh guard pipe and thetrampoline leg pipe are sleeved inside and outside, and fastenerinstallation holes penetrating from front to back are respectivelyprovided at corresponding positions of the connecting joint, thetrampoline leg pipe and the mesh guard pipe to fixedly connect thetrampoline leg pipe, the mesh guard pipe and the connecting joint bymatching fasteners.
 13. The trampoline frame according to claim 12,wherein a clamping step for abutting against a bottom of the connectingjoint is formed at a lower end of the nozzle of the trampoline leg pipe.14. The trampoline frame according to claim 9, wherein the connectingjoint is an integrally formed structure.
 15. The trampoline frameaccording to claim 12, wherein a fastening sleeve is embedded betweenthe nozzles of trampoline leg pipes and mesh guard pipe and the throughhole of the connecting joint, and the fastening sleeve is configured tofill gaps between the trampoline leg pipes and mesh guard pipe and thethrough hole, wherein the connecting joint is firmly connected to thetrampoline leg pipes and mesh guard pipe, and the fastening sleeve isprovided with a fastener avoiding providing at a corresponding positionof a fastener installation hole.
 16. The trampoline frame according toclaim 12, wherein the nozzle of the trampoline leg pipe is sleevedoutside the nozzle of the mesh guard pipe.
 17. The trampoline frameaccording to claim 9, wherein each of the positioning bulges is formedby an inward recessing of a nozzle of the connecting joint, and the eachof the positioning bulges is circular in shape.
 18. The trampoline frameaccording to claim 12, wherein the through hole penetrating from up anddown of the connecting joint is a circular-shaped hole, and the nozzlesof the trampoline leg pipe and the mesh guard pipe are formed withcircular-shaped nozzles matched with the circular-shaped hole.